Sia was the musical guest on Saturday Night Live this past weekend, and as always, the camera-shy singer knocked it out of the park in terms of her performance.

With a large wig covering most of her face, the Australian star played 'Alive', which saw a martial artist-cum-dancer perform alongside her and a gospel choir.

She also played 'Bird Set Free', joined by the same dancer in different attire.

Watch both songs - introduced by guest host Donald Trump - below: